Blur

BG-blur is a motion trail background in Powder Game and Powder Game 2. Objects that are moving leave behind a trail of fading colors, and elements that disappear quickly (such as Laser text), leave behind an afterimage. To some, BG-blur is preferred over BG-light, as it leaves a prominent background without causing colour changes.

Uses

 * Used to create movie-like effects with lasers (as a line that leaves behind a motion trail)
 * Used to create effects with fireworks
 * Used to improve the appearance of player courses, chain reactions(Blob) etc.
 * Blur effects have been used to show speed of Players moving, making them more visible to the user.